Environmentalhard · Past Paper
The 'Keeling Curve' is a graph that represents:
AThe rate of ozone depletion
BThe rise in sea level
CThe concentration of atmospheric CO2 over time
DThe change in global population
✓ Correct Answer: C — The concentration of atmospheric CO2 over time
The Keeling Curve shows the ongoing change in concentration of carbon dioxide in Earth's atmosphere since 1958.
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